CODEWITHSUNDEEP
swiftgenericsoperator-overloading
Paul
Paul

Reputation: 1

Generic Operator Overloading in Swift

I've been learning Swift and have a question about using Generics with Operator Overloading. This is my requirement:

  1. Have a basic generic struct that implements generic matrix functionality, having three main parameters: row:Int, column:Int and array:[T].
  2. Want to implement == operator, i.e. each parameter is ==.
  3. Don't want to have to duplicate operator overload functions for each type.

It seems Swift isn't smart enough to allow me to write a generic operator overload function that references the generic array [T] without some workarounds?

I have read this post: [http://www.raywenderlich.com/80818/operator-overloading-in-swift-tutorial][1] and the solution given there seems surprisingly complicated.

I just wondered what the general consensus amongst the pro's here is? Sorry, I will post a code sample as an edit shortly.

Paul

Upvotes: 0

Views: 1577

Answers (1)

Manav Gabhawala
Manav Gabhawala

Reputation: 997

Here's how you can do that. Its very easy, you just need to ensure that T is Equatable. 

struct Matrix<T> {
    // Definition goes here.
    var array = [T]()
}
func ==<T: Equatable>(lhs: Matrix<T>, rhs: Matrix<T>) -> Bool {
    return lhs.array == rhs.array 
}

Upvotes: 2

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